Homework Answers
38)
A box plot is used to identify the outliers in the data set.
A box plot is calculated using median, upper and lower quartiles, so it is easy to identify
whether the data is outside the usual value (that is far away from quartiles to say outliers.)
39)
z = -2.005
p-value = P (Z < z)
= P (Z < -2.005)
= 0.0225
p-value = 0.023
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